| 摘要 |
In the context of transmitting video data over a channel for transmission by powerline communication, the invention relates to a first communication device that: obtains (200) video data in the form of a series of uncompressed images; determines (601) the capacity of the transmission channel; breaks down (602) each uncompressed image into wavelets, so as to obtain data having different resolutions; compresses (609) each image broken down into wavelets, on the basis of the determined capacity of the channel for transmission by powerline communication; and carries out a pulsed and spread transmission (611) of each compressed image to a second communication device, so as to introduce data redundancy, the rate of which, for each datum of said compressed image, is defined on the basis of the resolution of said video datum, the redundancy of the data having the lowest resolution being higher than that of the data having any other resolution. The first communication device also transmits (608) speed charts enabling the second communication device to use an image enhancement operation. |
